A voluntaby association



G. H. DAY.

comes. APPLICATION FILED DEC-26, 1917.

1,408,349. v Patented Feb.28, 1922.

INVENTOR 4 qsoma: H. DA

A TTORNEYS UNITED STATES PATENT OFFICE.

GEORGE E. DAY, OF SOUTHBRIDGE, MASSACHUSETTS, ASSIGNOR'TO AMERICAN OPTI-CAL COMPANY,'OF SOUTHBRIDGE, MASSACHUSETTS, A VOLUNTARY ASSOCIATION OFMASSACHUSETTS.

GOGGLES.

Specification of Letters Patent.

Patented Feb. 28, 1922.

Application filed December 26, 1917. Serial No. 208,942.

To all whom it may concern:

Be it known that I, GEORGE H. DAY, of Southbridge, in the county ofWVorcester and State of Massachusetts, have invented certain new anduseful Improvements in Goggles, of which the following is aspecification. a

This invention relates to improvements in ophthalmic mountings and hasparticular reference to an improved constructlon of mounting adapted foruse in the industries.

One of the leading objects of the'present invention is the provision ofan improved mounting for this purpose particularly adapted for smeltersor other use in wh1c h the wearer is subject to intense heat conditionsand also to flying particles liable to break, abrade or otherwise injurethe lenses making it desirable that the lenses be interchangeable andreplaceable. L

A further object of the present invention is the provision of a novelimproved struc- I ture for this purpose in which metallic parts or thelike shall be reduced to a minimum and in which there shall be nometallic parts exposed to contact with the face of the wearer.

Another object of the present invention 1s the provision of an improvedconstruct on of lens cell and improvedfra-me for wwwing the cell whichwill permit of the ready insertion or removal of the lens and cell asdesired, facilitating either interchangement or replacement of the partsin a simple and eflicient manner.

' Other objects and advantages of my improved construction should bereadily apparentby reference to the following speclfication taken inconnection with the accompanying drawings forming a part thereof, and itwill be understood that I may make 1 any modifications in the specificdetails of construction shown and described within the scope of theappended claims without departing from or exceeding the spirit of myinvention.

Figure I represents a front elevation of a ,mounting embodyingimprovements.

Figure llrepresents a top plan view thereof. I

Figure III represents a horizontal sectional view taken as on the lineIII--III of Figure I.

Figure IV represents a vertical sectional view as on the line IV-,IV ofFigure II.

Figure V represents an enlarged fragmentary View particularlyillustrating one construction of lens cell, and Figure VI represents asectional view through the bridge member as on the line VI-VI of FigureII.

In the drawings, in which similar characters of reference are employedto denote corresponding parts throughout the several views the numeral 1designates my improved bridge or connecting member formed of leather orother suitable flexible nonmetallic material having secured to each endthereof an eye cup preferably of fibre or other nonmetallicnonconducting material which will readily radiate but will not absorbheat radiations and consequently will not become unduly heated anduncomfortable to the face of the wearer. To insure most comfortablefitting of this bridge member to the nose of the wearer it will be notedthat in place of same being disposed in a substantial vertical planewhen on the face of the'wearer or in other words in a plane parallel tothe lenses as has been customary with flexible or non metallic bridgemembers as previously employed, I have shown my improved bridging memberas disposed at an angle substantially corresponding to the angle of thecrest of the nose so that in the event that the bridging member comesinto contact with the nose of the wearer it .will lie fiat against thenose in a comfortable manner in place of having an. edge only contactingwith the nose and liable to cut somewhat thereinto. To attach myimproved construction of bridge member suitable to the eye cup 2 andeliminate metal parts and-the like I have preferably formed in the eyecups the diagonal extending slots respond to the surface of the face ofthe wearer to fit rather closely thereagainst and exclude dirt or'flyingparticles, while to permit of ventilation of the interior of the cupsand thus prevent undue heat around the eye, "steaming of the lenses orother disagreeable effects due to tight fitting cups, I have formed inthe cups the plurality of ventilation apertures 5. These apertures,however, in place of being formed directly through the cups as has beencustomary in the past are formed at a rearwardly inclining angle in sucha manner that an air current can go up along the face or a currentcreated by the rising of the heated air with in the cup will moveforwardly as well as upwardly if entering the goggle and toward thelens,,tending in a manner to equalize the temperature on both sides ofthe lens in that the incoming outer air currents are directed in a sortof spray thereagainst while the apertures at the top are also rearwardlydirected so that the possibility of flying particles or the likeentering through the apertures is reduced to a minimum, since theentrance and exit apertures are both directed toward the face or in theopposite direction from that to be expected of the movement of suchparticles.

{I have previously referred to the desirability of employinginterchangeable lenses in a frameof this character and to facilitate theaccomplishment of this result I preferably first form near thefront endof each of the eye cups an angular groove or channel as at 6 and thensubsequently cut away a portion of the front wall of the channel,leaving the rear shoulder as at 7 with the front open, while leaving aportion of the groove complete. In addition I then form at one edge ofthe goggle cup 2 the slot or kerf 8, while secured exteriorly to the eyecup and extending inward through the slot is the resilient lockingmember 9 having the spring lip or operating portion 10. In use either aplain lens or preferably a lens mounted in one of my improved cells hasa portion of its edge first engaged in the channel 6 and is'then pressedrearwardly toward the eye cup, when the lens will engage and camoutwardly the spring lip to permit the lensto snap past the lip intotight engagement with the shoulder at T as is clearly illus- .trated inFigure IV. The lip 10 springing inwardly after passage of the lens willserve to engage and retain the lens against accidental outward movement,the result being that the lens is held at one side by its fit within thechannel 6, its rearward move ment around its entire circumferenceprevented by its engagement with the shoulder 7 and it is detaehablyheld against outward or disengaging movement at its other side throughthe engagement therewith of one .or more of the spring fingers so thatwhile the lens may be snapped out of the eye cup by pressure from therear adjacent the locki'ng spring 9 it is normally satisfactorily heldin position. While I have mentioned that an ordinary lens may beemployed, I

preferably make use of an improved metallic cell'for retaining the lens,this cell being adapted for use with either a single lens or a compoundlens made up of one or more pieces of glass such as is frequentlyemployed in the industries, in this event the cell serving both tofacilitate the mounting of the lens, holding together the several partsor components making up the lens, and also to prevent chipping of thelens previous to its mounting in the frame and is at all times adesirable protection and reinforcement for the lens. The exactconstruction of this cell should best be understood from reference toFigure V, from which itean best be seen that the lens 1 has fittingtherearound the double ogee ring 12, the lens preferably being beveledfrom one side only as at 13, and the doubleogee portion of the ringfitting against the beveled edge of the lens, while a second portion 14Edepends over the face of the lens andprovides a little rim around theedge of the lens, whereby when the lens is mounted in position in theframe the portion 14 will rest against the shoulder 7 of the eye cup,reinforcing and bracing the lens at the rear around the edge toeliminate breakage or chipping by undue strain on the extreme edge orbeveled portion of the lens if the same is struekjby a. flying particle.It will be noted that the double ogee formation referred to provides atthe rear of the lens the projecting rim 15 and adjacent groove 16, therim 15 fitting in the channel 6 and behind the lip 10 of the springfinger Sand the lip interlocking with the groove 16 to retain the partsas previously described.

To retain my improved construction in position on the face I havepreferably made use of a head band as at 17 which may extend through theside apertures 18 of the eye cups and be suitably secured in positioneither by the formation of an enlargement on the end of the head band orby loops going around the rear edge of the cup 2 and sewing or otherwisesecuring the ends together. At the same time to increase the comfortablefit of the mounting on the face of the wearer I preferably bevel off theouter'edge of the inside portion .of the cup, as indicated at19 so thatit may present a wider bearing surface to more smoothly fit against thenose of the wearer,this bevel gradually changing till on theouterportion the bevel isat 20 or on the inside face of the cup so that theouter portion will coinfortably fit against the face of the wearer. Itwill be apparent, therefore, thatthese bevels take care of the pressureagainst the side of the .nose and against the side of the face and givemuch broader and more comfortable bearing surfaces than have previouslybeen provided in a substantial one-piece or heat proof construction suchas that here presented.

From the foregoing specification taken in connection with theaccompanying drawings the construction and advantages of my improved eyeprotecting mounting, including the lens cell for use in connectiontherewith, should be readily understood, and it will be seen that I haveprovided a novel and improved construction which has the several partsso constructed as to be very comfort able in fitting the face of thewearer and having a soft contact therewith, together with an absence ofmetallic or other parts liable to become heated and uncomfortable to theface of the wearer, and it will be further noted that I have provided animproved reinforcing lens receiving cell and novel and improved meansfor securely but detachably mounting the cell within the eye cup topermit of readily removing and replacing the lens and cell when desired.

I claim:

1. In a device of the character described, the combination with a lens,of a retaining rim therefor encircling the lens and having an outwardlyprojecting rib or flange portion and an eye cup member having a seat toreceive the lens, a keeper recess to receive the rib, and an additionallocking member for engaging the frame to secure the same in position onthe seat.

2. The. combination with an eye cup having a groove formed in one edgethereof, providing a shoulder, of a portion on the cup overhanging theshoulder at one side thereof to form a channel, and a spring clipprojecting adjacent the shoulder at theopposite side whereby a lens mayhave its edge at one side engaged in the channel and its opposite edgeengaged with a spring finger to detachably hold the lens in engagementwith the shoulder.

3. The combination with an eye cup having a channel formed at one endthereof, of a lens, a cell for the lens having a projecting rim portionadapted to fit within the channel of the cup and resilient locking meanson the cup engaging the rim for locking the lens in position in the cup.

In testimony whereof I have affixed my signature, in presence of twowitnesses.

GEORGE H. DAY. Witnesses:

WM. P. CHAsE, WILLIAM B. J ONES.

